A metamaterial-embedded wide-band antenna for the microwave C-band

Abstract

In this paper a metamaterial-embedded, compact microstrip-fed patch antenna is introduced for microwave C-band applications. The proposed antenna is composed of a rectangular metamaterial-embedded patch, microstrip-fed line and a partial ground plane. The finite-integration technique (FIT) based on Computer Simulation Technology (CST) Microwave Studio is utilized in this study. The measurements of antenna performances are conducted in a near-field measurement laboratory. The antenna performance parameters comprising the reflection coefficient, radiation efficiency, gain, and radiation pattern are studied to validate the antenna performance. The measured results show that the proposed metamaterial-embedded antenna exhibits a wide impedance bandwidth over the C band (from 3.77 GHz to 6.58 GHz). The results also indicate good radiation efficiency and antenna gain with a nearly omni-directional radiation pattern at the frequencies of interest. Keywords: antenna, head model, substrate material V~lanku je predstavljena kompaktna mikrotrakasta antena v obliki obli`a, z vgrajenim metamaterialom za uporabo v mikrovalovnem C-pasu. Predlagana antena je sestavljena iz v obli`vgrajenega metamateriala pravokotne oblike, iz linije iz mikrovlakna za napajanje in z delno ozemljeno povr{ino. V {tudiji je uporabljena tehnika kon~ne integracije (FIT), ki temelji na tehnologiji ra~unalni{ke simulacije (CST) Microwave Studio. Meritve zmogljivosti antene so bile izvedene v gluhi sobi merilnega laboratorija. Za oceno zmogljivosti antene so bili izmerjeni parametri zmogljivosti, ki obsegajo koeficient refleksije, u~inkovitost sevanja, izkoristek in sevalni diagram. Izmerjeni rezultati ka`ejo, da ima antena z vgrajenim metamaterialom {irok impedan~ni pas v C pasu (od 3,77 GHz do 6,58 GHz). Rezultati ka`ejo tudi na dobro u~inkovitost sevanja antene in izkoristek antene s skoraj vsesmernim diagramom sevanja na frekvencah interesa.